Coming soon: Adjacent string literals will be concatenated: ‘dog’ ‘house’ == ‘doghouse’. String + operator is on its way out.

Promise is removed, use Future.

toString on collections will soon return their contents and deal with recursive refs intelligently.

The VM now recognizes dart:json, dart:uri and dart:utf8.

In the Dart to JavaScript Compiler, the SSA-based backend is now capable of dealing with many parts of corelib and we took the first steps towards wrapperless HTML and DOM libraries in the optimizing backend. Moreover, we fixed compiled JavaScript to run on browsers without Function.prototype.bind (Safari).

The Dart Editor continuous build bundles SDK and Dartium (except on Windows - no Dartium yet). The editor now launches Dartium by default, only compiles to JS if necessary on launch. It also had a few performance improvements and fixes and the new Welcome Page provides quick & easy access to samples.